Good morning, and Good Friday!

Question: Does a worn or "tired" bore affect the accuracy as much on a rifle of .400+ caliber as it does on say a .30?

There is a .450/400 3 1/4" nitro I'm thinking of having a crack on but it is a very used rifle. This is the response I got when asked of bore condition. It's not a double rifle.

"The bore is worn and tired and lightly pitted."

Cheers,
Ash.